The plural is fuchsias.
I agree, Tina, that tip cuttings work best for propagation. As for the one that's growing by means of "underground runners," I have a few that do that also, but I'm not sure whether I only notice it on them because they're the largest and most vigorous fuchsias in my garden. Maybe all fuchsias do that. It would be interesting to hear what
@midnight21 has to say about this.